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What is the effect of adding draft tube in double flange limited expansion joint

Why double flange limit Expansion joint How about adding a draft tube in the? What is the effect of the draft tube on the double flange limited expansion joint?
The guide tube is a required component of double flange limit expansion joint, which can reasonably increase the service life of double flange limit expansion joint. We add the guide tube in the double flange limit expansion joint in order to prevent the access to hard objects Compensator Internal damage to metal expansion joint can also increase the service life of double flange limit expansion joint. As the name suggests, the draft tube has a guiding role. Having this guide tube can prevent the metal expansion joint from having a buffer function in case of deformation, and ensure that the double flange limit expansion joint can be used normally. There is also a function that can cause the vibration of double flange limit expansion joint when it meets the material block of rapid commodity circulation, which has a buffer effect, so as to prevent the vibration of double flange limit expansion joint too strong to affect the service life.
The double flange limited expansion joint is mainly used for long-distance pipeline, transportation pipeline, water supply and drainage pipeline and industrial pipeline. Materials are mainly divided into: Q235 carbon steel, stainless steel, cast iron, graphite iron, etc. the drawing model is vssja-2 (B2F). The functional structure is composed of flange welded pipe fittings, sealing ring, gland and limit bolt. The main performance is to assemble and form two kinds of flange sleeves. According to the structural mechanical transformation caused by vibration and skewness of the pipe of tightening bolt transmission system, the larger expansion has the function of limiting position, so that the two pipelines can obtain a certain force transmission effect and ensure the normal operation of long-distance pipeline under the supporting condition. It has the characteristics of simple and reasonable structure, easy sealing and convenient installation and replacement. All performance parameters, functions and prices can completely replace the expensive compensator. Repair free function is easy to use in various harsh environments.
When the double flange limit expansion joint is delivered from the factory, the sealing and pressure test tests shall be carried out in strict accordance with the national standards and industrial standards. After all the tests are completed, the expansion joints must be kept dry and dry, and the preparation for shipment shall be made after reasonable packaging. In particular, it is required to prevent mechanical damage during transportation. In addition, according to the engineering requirements, all expansion joints above the size of DN 1000 shall be stored independently to provide product maintenance and avoid rain during transportation.
Therefore, we must not forget to weld a draft tube inside when installing the double flange limit expansion joint, which is beneficial but not harmful to everyone's double flange limit expansion joint.

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